Urgent prayer request (Dad in ICU)

My dad has heart complications and has been in ICU since he went unconscious and fell yesterday. They have since had to revive him a couple of times. His faith is strong please keep him in your prayers. Thank you. The doctors have said his blood pressure is once again dropping his blood pressure raised yesterday with the help of God I know it will be raised again. They checked his brain scans and he is not Brain dead which was a fear the doctors had previously I know God was there to help his brain and will help him through this.